Typewriting-machine



J. PHELPS.

TYPEWRITING MACHINE.

APPLICATION FILED IAN. 18| i919.

2 SHEETS-SHEET I.

WITNEESEE- "'A I I INVENTDR. 77%. M 21 gy, @/@QMW Y I @HIS ATTURNEY.

J. PHELPS.

TYPEWHITING MACHINE. VAPPLICATION FIL'ED JAN. 1s. 1919.

Patented. 001526,1920.

2 SHEETS-SIHEET 2.

.INVENTUR aad, HIE ATTRNEY q Unirse srarssj PATENT OFFICE.

JOSEPH PnELPs, OP BELLEVILLE, NEW JERSEY, AssIcrNOR To REMINGTON TYPE--` WEITEE COMPANY, OE ILION, NEW YORK, n CORPORATION OPNEW YORK.'

TYPEwEI'rING-MACHINE.

Specification of Letters Patent. Patmed oet 26, 1920.

Application fuea January 18,1919. seria1-No.'271,79*/.

To all w hom t may concern Be it known that I, JOSEPH PHELPs, a. citizen of the United States, and resident of Belleville, in the county of Essex and State of New Jersey, have invented certain new Vand useful Improvements in Typewriting- Machines, of which the following is a speci fication.

My invention relates to typewriting machines and it has for its object to effect certain improvements in the control of the car-` parts of the machine, portions of which are in vertical section.

Fig. 2 is a plan view in section on the line 2-'2 of Fig. 1.

Fig. 3 is a sectional view on the line 3-3 of Fig. 2 and looking toward the rear of the machine.

Fig. 4 is a 4rear elevation of the escapement mechanism wheel and thebracket on which it is mounted and showing ltheV rear end portion of my improvements.

Fig. 5 is a perspective view on .asmall scale of the bracketin which the escapement wheel and the movable parts of my improve` ments are mounted.

Figs. 6 to 9 inclusive show of the invention.

Fig. 6 is a view of said modified form somewhat similar to Fig. 1 but with parts of the mechanism shown in section on line 6-6 of Fig. 7.

Fig. 7 is an enlarged top plan view with part-s in section on the line 7-7 of Flg. 6.

Fig. 8 is an enlarged view, partly in section, on the line 8- 8 of F 1g. 7 and also with parts broken away.

a modified form Fig. 9 is an enlarged fragmentary view only is shown. Said top-plate has a goody size-d notch or cut-Out indicated in the drawings by the'lines 12, said cut-out being partly I for the accommodation 'of the escapement l mechanism and partly for the accommodation of certain tabulator-'mechanism' not shown. l i the purpose of which' isto secure in place certain tabulator frame-work with which the present invention is not concerned.

The machine kto which my invention is here applied includes a set of front-strike type vbars which operate a universal bar, which universal bar is connected "with a link 14, Figs. 1 and 6, that operates the escapement, said link 14 being moved toward the rea-r of the machine on the positive stroke of any type bar and returning toward the front of the machine on the return stroke of the type bar. Ofthe carriage of the machine nothing is shown except the feed rack 15 which meshes with a feed pinion 16 which is connected with the `,escapement mechanism. Said carriage `is normally. drawn toward the operators left. by means of a spring drum-17 acting throughv a tape 18.

jA shaft 20 is journaledv at its ends yinl a 6o In Fig. 3 are shown two' ears*13,`

sor

bracket 21, .which bracket is secured by i screws to the top vplate 11 at 22. At its real'` end the shaft 2O has mounted thereon the The .escapement wheel proper 28'is secured to the rear face of the disk or wheel 26Yby .means of screws 30. The pinionv 16 is l'fast on or integral with the forward end of a hollow shaft 31`which at its forward end is journaled on vthe shaft 20 and at its rear end on av reduced portion of the hub 23. At its rear end said sleeve or shaft 3l is widened out to form a barrel 32 having a pawl 33, Fig. 3, pivoted .therein and pressed by a spring 3 4 into engagement with the ratchet wheel 24, the construction being such that when the carriage is traveling in forward or letter feed direction the shaft 20 and escapement wheel y28 are positively driven with the pinion 16, but'when the carriage is moving in reverse direction, that is, toward the operatorsV right, said pinion can turn independently of saidshaft and escapement.A i

wheel.

Y 40V y Y tooth45 which strikes it and forces it back A dog rocker is pivoted on cone pivots 36 mounted in a bracket 37 secured to the underside of the top plate 11 and said dog rocker has a depending arm 38`to which the link 14 is connected, the whole construction being such that on a positive stroke of a key or of the space bar the arm 38 moves toward the vrear of the machine and the upper part of the dog rocker toward the front of the machine. The extreme upper part of the dog rocker 35 is formed into a fixed beveled dog 40 and a loose or stepping dog 41 is pivoted to the front face of said dog rocker onl a pivot 42 withfreedom to vibrate between two stops 43 and 44. Any suitable detent maybe provided to prevent backward rotationof the escapement wheel 28 when rack 15 is raised out of mesh with pinion 16 to release the carriage. rI`.he dog rocker shown and described is or may be of the sort shown and claimed in the application of George A. Seib, Serial No. 118,607, filed September 6, 1916.

In the escapement described the parts normally stand as shown in the drawings.

` When a Vcharacter key or the space key is operated the lower end of the dog rocker is moved toward the rear and the upper part of said dog rocker toward the front of the machine, thus moving the stepping dog 41 i out of engagement with` one `of the teeth 45 of the escapement wheel and the rigid dog 40 into engagement with said tooth. The stepping dog when moved out is iinmediately thrown over by its spring 46 against the stop 43 and when the space bar or universal bar returns to normal position and the upper part-of the dogrocker moves mal position the dog 41 will Vbein the potoward the rear, said stepping dog moves back into the path ofthe next oncoming against the stop 44. AsV the carriage moves along step-by-step it will ultimatelybe arrested by a line lock stop, and it is the intention that the keys at this time be locked against operation, but as a matter of fact the loose dog 41 will have been moved out of engagement with the lowermost tooth 45 and will have dropped back against its stop 43; but as the carriage has been arrested the escapement wheel will not turn and when the dog rocker returns to norsition shown by dotted lines'in Fig. 3, and this dog and the wheel 28 will be in false relative position, which maybe described as an escaped disarrangement ofthe members of the escapement. p If now the carriage be withdrawn toward the right until it is arrested by the margin stop and lthen be restored to the control of the escapement, it

will happen if nothing` be provided to prein the present instance.

vent it, that the wheel will not stay in the Y position shown in Fig. 1 but' the carriage will be drawn by its spring one` step toward the left until the tooth 45 at the right of the dog 41, as shown in dotted lines in Fig. 3, comes down to lowermost position. The carriage will therefore take a false step so that if the margin stop had been set for letter space position 10, for example, the carriage will as a matter of fact come to rest at letter space position 11 and that par-Y ation other than the one described, as for example by the operator striking a letter key or a space key after the carriage has beguny its return motion. I have provided means to cure the defective operation mentioned.

In some prior construction it has been sought to remedy the described defect by providing in ad@ ition to the feed dogs 40 sor and 41, a third or so-called margin dog v which when the dog` 41 is in the false position shown in Fig. 3 itself takes hold Vof the lowermost tooth 45 in place of saiddog V41; but my invention involves a different principle in this respect, that instead of providing a substitute for the misplaced dog 41 I provide meansfor correcting the relative positions of said dog and the escapeinent wheel. In the present instance this is done by moving said escapement wheel int-oV proper, relation to the dog 41. This can be done theoretically by moving ment wheel in either direction. Thus if said wheel be moved in counter-clockwise direc-' tion in Fig. 3, that is to say, in the same direction that it turns when the carriage is stepping, the neXt oncoming tooth of the escapement wheel will strike the dog 41 and press it back into its normal position shown in Fig. 1; and this is the mode of operation I have also invented means for moving the wheel in the opposite direction, forcing the lowermost tooth 45 to the left in Fig. 3, past the misplaced dog 41, the same being set forth and specifically claimed in my co-pending application filed Jan. 23, 1919, Sr. No. 272,682. I purpose in this case to make `claims broad enough to cover bothV of these schemes, as well as claims limited to the specific Vform of the invention herein described.

In the form ofi the invention shown in Figs. 1 to 5 inclusive, I mount in the bracket 21 a counter-shaft 47 having a pinion 48 fast on its forward end and in position to engage the feed rack 15 a little to the rightv the escape-Y of the pinion 16, so that said pinion 48 is constructed so that there isan annular space between said'hub and the cylindrical part of said drum. A gear wheel 52 has its hub extending into said annular space and journaled on the outside of the hub 50, said gear wheel 52 meshing with the gear wheel 26v that is connected with or practically forms a part of the escapement wheel 28. The construction includes a slip joint which can be variously located. As here shown, kin

front of the drum 51 a disk 53, preferably of fiber or other suitable friction material, is mounted on the shaft 47 to which itis connected by means of a pin 54, Fig. 2, said pin passing throughthe shaftand into a notch in the disk 53 and constituting in eiect a splined connection between said disk and the shaft so that the disk is compelled to rotate with the shaft but can move longitudinally thereof so far as the pin 54 is concerned. The disk 53 is pressed into yfrictional contact with the drum 51 by means of a yspider-shaped spring 55 which is compressed between said disk and a collar 56 mounted on the shaft 47 and secured in place by a set screw 57 The thrust of the spring 55 is taken by a washer.58 mounted on the reduced rear end of the shaft 47 and held in place by nuts 60. The construction lis such ithat the spring 55 and disk 53 tend frictionally to cause the drum 51 to turn with the shaft 47 but these parts rcan be turned independently of one another byy a force sufhcient to -overcome the friction. The drum 51 yis connected with the wheel 52 by means of a one-way-actingV clutch, that shown'being a roller clutch consisting of a roller 61 mounted in a notch 62 in the hub of the wheel 52 and acted on by a very light spring 63. This clutch enables the drum 51 to turn independently of the wheel 52 when the carriage is moving in forward or `letter feed direction but constitutes in effect a positive connection between said. drum and wheel when the ycarriage is moving in reverse direction toward Vthe beginning of a new line of writing. As a matter of fact, as will be readily understood, when the carriage is moving forward the drum 51 and wheel 52 turn in opposite directions but the parts run freely at this time. The slip joint 53 tends constantly during'the reverse movement of the carriage to turn the escapement wheel 28 in its forward direction so that even if the space key, for example, be operated while the carriage is in motion toward the right, the escapement wheel will take a full step and come to correct position. It will be perceived that the escapeinent wheel 28 is geared to the carriage in the usual way, but that I have provided in additionk secondary gearing to control said wheel durl ing reverse motion of said carriage.

v'The bracket 21 is'here shown of a construction modied to accommodate the new elements just described, asbest shown in n l Fig. 5, where itv will be seen that said bracket has two ears 64cin which the shaft 47 is journaled,and thatthe arm 65 of said bracket is elevated so as not to interfere with the gear wheel 52. v

In operation, when the carriage is moving in letter feeding direction, as in the operaticnfof writing,- both pinions 16 and 48 will be turned in the same direction and the escapement wheel 28 will be turnedl in its usual or forward direction, namely, in the direction of the arrow in Fig. 3, this turning of the wheel'being lpositive through the medium of the Oneway-acting clutch consisting of the pawl 33 and ratchet wheel- 24. At this time the gear wheel 26 is positively turned Vand therefore the gear wheel, 52 is positively turned in the opposite dif rection, at which Vtime the roller clutch r61 is loose and offers practically no resistance tothe turning. When the carriage ,is drawn vback toward thev right to beginA a new line.

both pinions 16 and 48 are` turned inthe reverse direction, but at this time the -pawl Y and ratchet 33, 24 lare inactive and thel roller clutch 61 is active sok that the drum 51 cannot turn independently of the wheel 52, and said drum and wheel are therefore vsubjected to the full friction `of the disk rob fore be held in its normal position by friction with the'stepping do-g pressed back against the stop 44, as shown in Figs. 1 and 3. In casethev stepping dog 41 has made a false step, as above described into the position shown in dotted lines in Fig. 3, this falseposition will ybe instantly Vcorrected when the carriage begins to move toward theright bythe frictional connection'described; that is to say, by the turning of the escapement wheel 28 in letter feed' direction through the instrumentality of the gear wheel 52 and the frictional connection53. As soon as the wheel is moved to the position shown in Fig. 1, it is positivelyarrested` and from that time on during a rightward ymovement of the carriage the friction disk 53 rubs against therdrum 51,'which is, however, held stationary. T he result is that at the instant when the car- Vio riage comes against the margin stop the escapement wheel is standing in its Fig. 1 position in proper relation to the stepping dog 41, whether or not said stepping dog' had at the beginning of said rightward motionbeen standing vin its correct position or in its incorrect position. It will thus be seen that the margin will be uniform because at thetime when-the carriage is restored tothe influence of its escapement,

rafterbeing arrested by the margin stop,

said escapement willV be standing in the same position, irrespective of -whether or not the stepping dog had gotten into a false position. lBy my improvements, therefore, the incorrect relative position of the escapement wheel and stepping dog-is Vcorrected automaticallyby the return motion of the carriage. i i

Another form of my'invention is shown in Figs. 6to 9 inclusive. In this form of Vvan idler gear 67 journaled on a screw 68 threaded into a bracket 70, which bracket is secured by means of a screw 71 to the top surface of the bracket 21a. The bracket 70 as here shown consists ofca piece of sheet metal bent up into U-shape to form two vertical arms in which is journaleda coun'- ter-sliaft 72 having'iixed on its rear end a pinion 73 that meshes vwith the idler 67,

Y the construction being such that the shaft 72 turns always in the same direction as the hollow shaft 31. On theV rear end of the shaft 72 there is mounted a disk or washer 74C and abutting against said disk is the elongated hub 75 of a drum 76 corresponding in this form of the invention to the drum 51 of the other form. A pinion 77 meshing with the gear 26 has its hub 7S journaled on'the hub 75 and said hub 78 is operatively connected with the drum 7 6 by Y means of a roller clutch 80,.similar in function to the roller clutch 6l of the preceding form of the invention: A" friction disk 81 is mounted on the shaft 72 with which it is connected by a spline'pin 82 and saiddisk is pressedagainst the drum V76V by means of aV spring-spider 83 compressedv between said disk and a collar 84 on the shaft72. It will be perceived that whereas this form of the invention differs in details from the first form, the only essential difference is inthe form of gearing between the counter-shaft and the-feedrack, both forms of gearing,

however, having the veffect of making the hollow shaft of the escapement and said counter-shaft turn in the saine Vdirection whenever either ofthem is turned by the In both Aforms of the invention I have so proportioned the gearing that a given eX,n tent of motion ofthe rack 15 toward the operators right turns the escapement wheel to a less extent than the same motion of said- In other` rack toward the operators left. words, the gearV wheel 26 is larger than either of the gears 52 and 77 and in Fig. 1 the pinion 48 is a little larger than the pinsoA ion 16.

VVarious changes other than those particularly referred to hereinabove, may be vmade in the detailsof yconstruction and arrangement without departing from my invention.

nism one ofthe members of which is capable of an escape step, and a correcting device operative on said member. A

In a-typewriting machine, the combination of a carriage, an escapement mechanism, and a correcting device automatically operative on said escapement mechanism by a reverse movement of the carriage.

at. Ina typewriting machine, the combination of a carriage, an escapement mechanism, a correcting device operative thereon, and means between the carriage and the correttng device for actuating the latter upon a movement of the carriage.

5. In Aa typewriting machine, the combination of a carriage, an escapement mechanism including a toothed wheel and a loose dog, and a correcting device for'moving one of said escapement members into proper relationship to another when said members shall have become disarranged by the movement of the loose dog to the wrong side of a wheel tooth. 1

6. In a typewriting machine andkinY carriage controlling mechanism, the combination with a power driven carriage, an escapement wheel, and a loose dog, said wheel and dog being liable to get into a false relation,

of means for automatically correcting said false relation between said wheel and dog.

7. In a typewriting machine and incarriage controlling mechanism, the combination with a power driven carriage, an escapement wheel, and a loose dog, said wheel and dog being liable to get into a false relation, of means operated by said carriage in its reverse movement to begin anew line for automatically correcting said false relation between said wheel and dog.

8. In a typewriting machinel and in carriage controlling mechanism, the combination with a power driven carriage, an escapement wheel, and a loose dog, said wheel 'and dog being liable to get-into a false relation, of means operated by the carriage in its reverse movement to begin a new line for imparting a turning movement to said wheel such as to bring a tooth of said wheel into correct relation with said loose dog.

l9. In a typewriting machine and in carria-ge controlling-mechanism, the combination with a power driven carriage, an escapement wheel connected with said carriage by pawl and ratchet mechanism, and feed dogs, of means operated by the return movement of said carriage forpositioning said escapement wheel independently of-said pawl Vand* ratchet mechanism.-

10. In a typwritingmachine and in carriage controlling mechanism, vthejcombination ofapower driven carriage, an` escapement wheel7 and feed dogs therefor, of means whereby said escapement wheel is positively driven by the carriage during the letter space feed of the carriage, and .separate means inactive during said letterl space feed but operated by the return movement of the carriage for setting said wheel into proper relation to the said feed dogs.

11. In a typewriting machine and in Acar- Y riage controlling mechanism, the combination with a power driven carriage, and an escapement wheel, of means operated by the return motion'of the carriage for setting said wheel at a deinite position.

12. In a typewriting machine, the combination of an escapement including a toothed wheel and a loose dog, of means for automatically moving said wheel and dog one relatively to the other, to correct said members when they get into a false position.

13. In a typewriting machine, the combination of an escapement including a toothed wheel and a loose dog, of means controlled by a reverse carriage movement for automatically moving said wheel and dog one relatively to the other, to correct said inembers when they get into a false relation.

14. In a typewriting machine, -the combination of an escapement including a toothedl `said wheel and carriage, and means whereby said secondary gearing acts ,on saidl wheel whenthe carriage is being returned toward position for beginning a new line of writing.

16. In a typewriting machine, the combi-- nation with a vcarriage, of an escapement wheel, gearing connecting said wheel with said carriage, secondary gearing 'between said wheel and carriage, and means includ-l inga one-way-actingclutch wherebyV said secondary gearing acts on said wheel when the carriage is being returned toward position for beginning a new line of writing.

17. rIhe combination with a carriage of an escapement wheel, means whereby said wheel is ositively turned as the carriage steps in etter feedk direction, and means tending to turn said wh-eel'in the same direction as before, when the carriage is moving in the opposite direction;

18. The-combination with a carriage,- of escapement mechanism including an escapement wheel and dog, meansforturning said wheel in one direction when the carriage is moving toward the left, andmeans for turning said wheel in the same direction a limited distance when the carriage is moving toward the right to correct any false step of said dog.

19. The combination with a carriage of an escapement wheel and means for turning lsaid wheel in the saine direction when the Vincluding an escapement wheel, of means including a counter-shaft and gearing for turning said wheel forward by a reverse movement of the carriage.

22. In a typewriting machine, the combination with a carriage and an escapement including an escapement wheel, of means including a counter-shaft and' gearing and a slip joint tending constantly during they reverse movement of the carriage to turn said wheel forward.

23. In a typewriting. machine, the combination with a carriage and anescapementv including an escapement wheel, of means including a slip ]oint tending constantly during the reverse movement of said carriage to turn said wheel. f v

24. In a typewriting machine,the.combinationv with a carriageV and an escapement including an escapement wheel, of fa 'train of connections from said carriage to said wheel including a slip joint and a one-way leoV ` including two one-way clutches, one acting on the forward and the other on the reverse movement of the carriage, and a slip joint operatively associated with the latter clutch. f 26. In a typewriting machine, the combination 4Vwith carriage escapement mechanismv including an escapement wheel, of a countershaft geared to the carriage, a gear loose on said countershaft and geared to said escapement wheel, a drum loose 0n said counter-Y Y shaft, a one-way-acting connection between said gear and s'aid'drum, and a slip-j oint between said drumand said 'counterfshaft Y V27. VIn a typewriting machine, the combination lof a carriage feed rack, afeed pinion meshing with said rack, an escapement Y wheel operated bysaid pinion during forvward motion of said carriage, feed dogs carriage.y Y

controlling, said wheel, a second pinionl `25 meshing with said rack, and means operated by said second pinion for controlling said wheel during reverse movement -of the 28.' In a typewriting machine, the combi- S nation of a carriage feed rack, `a feedpinion p meshing with said rack, anl escapernentl wheel operated by said pinion during 'forward motion of said carriage, feed dogs controlling said wheel, a counter-shaft hav- ,35 Y I ing a pinion meshing with said rack, .and means including aslip-join't and a one-wayacting connection whereby said counter- Y shaft controls said escapementwheel during reverse movement of said carriage.

Signed at the borough of Manhattan, cityV of YNew York, in the county. of New York andStateof New York this, 13th day vof- January, A. D. 1919. L

' v JOSEPH PHELPS.

lVitnesses: Y s f i CHARLES E. SMITH, Y f E. M. WELLS. 

